<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>Exclusive Database Handles</title>
    <link rel="stylesheet" href="gettingStarted.css" type="text/css" />
    <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
    <link rel="start" href="index.html" title="Berkeley DB Installation and Build Guide" />
    <link rel="up" href="upgrade_53_toc.html" title="Chapter 12.  Upgrading Berkeley DB 11.2.5.2 applications to Berkeley DB 11.2.5.3" />
    <link rel="prev" href="upgrade_11gr2_53_conn_status.html" title="Replication Connection Status in the Java API" />
    <link rel="next" href="upgrade_11gr2_53_heap_regionsize.html" title="Configure the Region Size of Heap Databases" />
  </head>
  <body>
    <div xmlns="" class="navheader">
      <div class="libver">
        <p>Library Version 12.1.6.2</p>
      </div>
      <table width="100%" summary="Navigation header">
        <tr>
          <th colspan="3" align="center">Exclusive Database Handles </th>
        </tr>
        <tr>
          <td width="20%" align="left"><a accesskey="p" href="upgrade_11gr2_53_conn_status.html">Prev</a> </td>
          <th width="60%" align="center">Chapter 12.  Upgrading Berkeley DB 11.2.5.2 applications to Berkeley DB 11.2.5.3 </th>
          <td width="20%" align="right"> <a accesskey="n" href="upgrade_11gr2_53_heap_regionsize.html">Next</a></td>
        </tr>
      </table>
      <hr />
    </div>
    <div class="sect1" lang="en" xml:lang="en">
      <div class="titlepage">
        <div>
          <div>
            <h2 class="title" style="clear: both"><a id="upgrade_11gr2_53_excl"></a>Exclusive Database Handles </h2>
          </div>
        </div>
      </div>
      <div class="toc">
        <dl>
          <dt>
            <span class="sect2">
              <a href="upgrade_11gr2_53_excl.html#idm140188017065680">New Functions</a>
            </span>
          </dt>
        </dl>
      </div>
      <p> 
        Database handles can now be configured to allow exclusive
        access to the database. To enable exclusive access, call
        <a href="../api_reference/C/dbset_lk_exclusive.html" class="olink">DB-&gt;set_lk_exclusive()</a> before calling <a href="../api_reference/C/dbopen.html" class="olink">DB-&gt;open()</a>. Set nowait_onoff
        to non-zero to have <a href="../api_reference/C/dbopen.html" class="olink">DB-&gt;open()</a> return immediately, with the
        error <code class="literal">DB_LOCK_NOTGRANTED</code> if it cannot
        immediately get exclusive access to the database, and to 0 to
        have <a href="../api_reference/C/dbopen.html" class="olink">DB-&gt;open()</a> block until it can gain exclusive access. 
    </p>
      <div class="sect2" lang="en" xml:lang="en">
        <div class="titlepage">
          <div>
            <div>
              <h3 class="title"><a id="idm140188017065680"></a>New Functions</h3>
            </div>
          </div>
        </div>
        <div class="itemizedlist">
          <ul type="disc">
            <li>
              <a href="../api_reference/C/dbset_lk_exclusive.html" class="olink">DB-&gt;set_lk_exclusive()</a>
            </li>
            <li>
              <a href="../api_reference/C/dbget_lk_exclusive.html" class="olink">DB-&gt;get_lk_exclusive()</a>
            </li>
          </ul>
        </div>
      </div>
    </div>
    <div class="navfooter">
      <hr />
      <table width="100%" summary="Navigation footer">
        <tr>
          <td width="40%" align="left"><a accesskey="p" href="upgrade_11gr2_53_conn_status.html">Prev</a> </td>
          <td width="20%" align="center">
            <a accesskey="u" href="upgrade_53_toc.html">Up</a>
          </td>
          <td width="40%" align="right"> <a accesskey="n" href="upgrade_11gr2_53_heap_regionsize.html">Next</a></td>
        </tr>
        <tr>
          <td width="40%" align="left" valign="top">Replication Connection Status in the Java API </td>
          <td width="20%" align="center">
            <a accesskey="h" href="index.html">Home</a>
          </td>
          <td width="40%" align="right" valign="top"> Configure the Region Size of Heap Databases</td>
        </tr>
      </table>
    </div>
  </body>
</html>
